Fans watch Zedd perform at the Bill Graham Civic Auditorium in San Francisco on Aug. 6, 2021. Matt Pang/STAFF. Updated July 30 at 12:10 p.m.: BottleRock Napa has now also announced a requirement that attendees either show proof of full vaccination against COVID-19 or proof of negative test results…

The Smashing Pumpkins perform at Oracle Arena (now Oakland Arena) in Oakland on Aug. 27, 2018. When will concerts return to such a high-density attendance? Alessio Neri/STAFF. In 2019, before the COVID-19 pandemic, Ineffable Music booked and oversaw 1,100 concerts at the five venues it either owns or at which…